|
|
|
|
Thread Tools | Display Modes |
12-06-2007, 09:15 AM | #1351 |
Scooby Newbie
Member#: 121212
Join Date: Jul 2006
Chapter/Region:
SWIC
Vehicle:2007 Sti Limited Urban Gray Metallic |
I love your car! I always thought the GN in black was the bomb, but.... yours looks incredible. Sorry hotrod, I just had to give kudos.
* Registered users of the site do not see these ads.
|
12-13-2007, 10:31 PM | #1352 |
Scooby Specialist
Member#: 96712
Join Date: Sep 2005
|
What would be the advantage and safety of running a 50% mix of E85 and 93 octane in my 2004 Forester XT?
I am going to get a tune from Clark Turner soon..... Ported APS S/R 50 turbo.... modded STI injectors (840cc), full 3 inch exhaust, ported WRX manifolds, wrapped and painted, STI intercooler..... 98 Supra turbo fuel pump.... stock fuel lines otherwise.... possibly install Agency power fuel rails and lines.... question is, this setup on pump gas should be good for about 340-360whp, probably limited to the turbo and intercooler... and the tranny will probably bust at 310whp or so..... so I plan on tuning for 280whp for daily mode, will I see any benefits to running E85 at this point?? more torque?? Will I run out of injector? automatic tranny.... Thanks RYNO Last edited by WRXINTX; 12-13-2007 at 10:37 PM. |
12-13-2007, 11:12 PM | #1353 |
Scooby Specialist
Member#: 63292
Join Date: Jun 2004
Chapter/Region:
South East
Location: Warner Robins, GA
Vehicle:2000 Subaru 2.5RS 2002 WRX powered |
if you lower the boost alot you might be able to use those injectors. not sure what boost levels would equate to that power level though, so I cant say for certain. My guess would be if its enough, youll be very close to maxing out the injectors.
|
12-14-2007, 12:16 AM | #1354 | |
Scooby Specialist
Member#: 2112
Join Date: Aug 2000
Chapter/Region:
South East
Location: Below 900ft. Mach .9
Vehicle:2000 Impreza 2.5RS BRP |
Quote:
|
|
12-18-2007, 01:16 AM | #1355 |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
**** caution ***** It may not advisable to mix octane enhancers with E85
I just stumbled on this info and have not validated it but wanted to put the info up for people to examine and make their own judgements. http://www.innovatemotorsports.com/f...ead.php?t=7690 See post #6 and following comments. Larry Last edited by hotrod; 12-18-2007 at 01:52 AM. |
12-18-2007, 07:52 PM | #1356 | |
*** Banned ***
Member#: 2992
Join Date: Nov 2000
Chapter/Region:
NESIC
Location: Connecticut, USA
Vehicle:02 WRX Sedan Silver |
Quote:
|
|
12-18-2007, 09:01 PM | #1357 | |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
Thanks for the input Jon, I found another oblique comment last night in a patent application, but need to do some more research on negative lead reaction. I am sure if it is valid we will find some useful references possibly in SAE papers etc.
For now it is just a "be aware" warning so folks are aware that antiknock agents are chemical blend specific and may not react as expected in new fuel blends. Quote:
Larry |
|
12-19-2007, 12:40 PM | #1358 |
Scooby Specialist
Member#: 12340
Join Date: Nov 2001
Chapter/Region:
MWSOC
Location: Lincoln, NE
Vehicle:2002 WRX 2.5L Hybrid WRB |
To clarify though if someone wanted to blend an unleaded race fuel with their E-85 to keep the octane high, instead of dilute it with regular pump fuel that is safe, correct? I am curious to this since I know a few of us out there still have to throw in a little extra pump fuel after filling up with E-85 to make the car happy. By adding the lower octane fuel you are lowering the overall octane ot the mix right? So if I wanted to add let's say 100 octane unleaded to my E-85 tank I would not be lowering that fuels knock resistance, or octane level as much as throwing in the same amount of 91. Am I on the right track here?
|
12-19-2007, 02:59 PM | #1359 |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
Yes it should be safe I have added both unleaded regular and unleaded pump premium to E85 with no problems.
Complex fuel mixtures sometimes do odd things, for example fuel mixing is why ethanol was not allowed in California for a long time. If you mixed an unleaded fuel blended with MTBE and some unleaded fuel blended with Ethanol together in the same fuel tank the evaporative emissions went way up. That was a big problem for the folks in California, so until MTBE was banned, for ground water contamination, they could not use both blending agents in the same local market. I think the issue is mostly just due to simple dilution. Right now everyone assumes that if you add two high octane fuels together the fuel octane of the mix will be approximately the weighted average of the two. For example 2 gallons of C16 (octane ~= 120) mixed with 8 gallons of pump 91 octane will give you 96.8 octane fuel more or less. The C-16 has TEL added at a rate of 6 grams of lead per gallon. Now take that same mixture but replace the 91 octane with E85 at 105 octane. The math formula says you should get (2x120)+(8x105) = 108 octane fuel. But since ethanol has no sensitivity to TEL all it is doing is diluting the TEL present so the C-16 now only has a concentration of 1.2 grams of lead per gallon so it will act like a low lead fuel and probably only have an octane in the low 90's so instead of getting the 108 octane high performance fuel you think you are running you are really running perhaps a 100 octane fuel. If you mix the fuel and then jack up the boost to take advantage of the extra fuel octane you think you have you will likely break something. At least that is my best guess at the moment. E85 is usually blended with simple straight run gasoline or the local base unleaded gasoline when they prepare it at the terminal. Larry |
01-16-2008, 04:12 PM | #1360 |
Scooby Guru
Member#: 177
Join Date: Aug 1999
Chapter/Region:
NWIC
Location: Austin, Texas, USA
Vehicle:The 93 W/EJ20K-sold Subaru-less :( |
what ever happened with the walbro testing have they come up with a new design? or approved the old
|
01-22-2008, 02:24 AM | #1361 |
Scooby Specialist
Member#: 126217
Join Date: Sep 2006
Chapter/Region:
MWSOC
Location: Delaware,OH
Vehicle:04 Jetta GLI Blue |
has anyone tried e85 on an 02 2.5rs to see how well it does? just seeing if i can use it in my car at all.
Last edited by midnight2.5rs-t; 01-22-2008 at 11:21 PM. |
01-22-2008, 06:32 PM | #1362 |
Scooby Specialist
Member#: 2112
Join Date: Aug 2000
Chapter/Region:
South East
Location: Below 900ft. Mach .9
Vehicle:2000 Impreza 2.5RS BRP |
Watch it if you're boosted on stock injectors. The injectors get small REALLY quick.
If you're stock, just use 30% (5 gallons E85 on a full tank.) I don't know about Walbro's progress. I'm hunting down Bosch and Delphi pumps that might work, too. Walbro's work well, but I'm curious who else might have something useable. It won't be long before there's some competition for stuff like this. My ITBs will likely need 565's or bigger, and boost isn't even part of the picture. Last edited by HamFist; 01-22-2008 at 06:42 PM. |
01-23-2008, 02:09 AM | #1363 | |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
Quote:
I think they are considering an E85 pump, but have not made a decision. That is just my speculation though! It would be a big retooling expense and is not a change they would make unless they were sure there is a big enough market to support the change. Larry |
|
01-26-2008, 01:36 PM | #1364 | |
Scooby Newbie
Member#: 156772
Join Date: Aug 2007
Location: The ATX - Hemi Terrorizer
Vehicle:1987 2 Turbo Buicks Black |
Quote:
This just shows how much dis-information is out there in regards to corrosion issues with E-85 FI vehicles. I'm running E-85 in an 20 year old car with no issues. I've had the fuel rail off a couple of times and have been looking for problems over these months in other areas of the system. I haven't found any |
|
01-26-2008, 01:40 PM | #1365 |
Scooby Newbie
Member#: 156772
Join Date: Aug 2007
Location: The ATX - Hemi Terrorizer
Vehicle:1987 2 Turbo Buicks Black |
Hotrod and others:
I'm finding that colder weather, ie 40 and below will make my car run not as well. The car really seems to wake up in the warmer weather. This must have something to do with the evaporative effect of E-85. It burns so cool, I guess too much cool is too much of a good thing. I'll be changing the 160 degree stat out soon as I see that is probably one of my problems. Anyone find their car is doing the same thing in regards to being happier in warmer weather?? This is so counter-intuitive than what I'm used to with 93 gas..LOL I used to pray for cold weather.. haha now I'd rather it be a little warmer. |
01-26-2008, 01:55 PM | #1366 | |
Scooby Newbie
Member#: 122595
Join Date: Aug 2006
Chapter/Region:
NWIC
Vehicle:2005 LGT Wagon ABP |
Quote:
|
|
01-26-2008, 05:02 PM | #1367 | |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
Quote:
I thought I had posted this before, but will put it in the front of the FAQ so folks can find it too! ============= E85 fuel ethanol content seasonal changes The recommended dates for changing E85 fuel blends are listed in a chart in the E85 handbook on page 22, which is in the "E85 Fuel Specification" tab. The Volatility class specifications are broken down on page 10. Volatility class 1 --- minimum ethanol 79% Volatility class 2 --- minimum ethanol 74% Volatility class 3 --- minimum ethanol 70% http://www.e85fuel.com/pdf/ethanol_guidebook.pdf As you can see each region has a different start date and recommendation for seasonal blends depending on local weather climate. Here on the high plains east of the rockies in Colorado we run the class 1 fuel blend from mid June -- mid Sept, run class 2 fuel from mid Sept -- mid Oct and run the class 3 fuel blend from Mid Oct -- mid April, then back to the class 2 blend from mid April to mid June. In short here in Colorado near Denver we are already on the winter blend, but there is latitude in the standard, so the standard only specifies a minimum ethanol content. If it is cheaper for the fuel blender to add more he can. Ethanol content is bottom line driven by local weather conditions, and cold starting problems for local drivers just a gasoline blends are modified to give easier starting in cold weather. In the Southern part of Texas they would never go to a class 3 blend, and in Wisconsin, they would only have the class 1 blend for about 2 months in the summer. In Florida they would be on class 1 almost all year long and in North Dakota and Wyoming and Montana, they would be on class 3 almost all year long. Larry |
|
01-26-2008, 05:22 PM | #1368 | |
Scooby Newbie
Member#: 151171
Join Date: Jun 2007
Chapter/Region:
MWSOC
Location: Siren, WI
Vehicle:02 Subaru WRX Blue |
Quote:
http://forums.nasioc.com/forums/show...hlight=pulstar Or Hotter coils? http://www.okadaprojects.com/usa/products_direct.htm I was wondering the same thing about the 160 thermostats...does you're car run rough even when it gets warmed up? |
|
01-26-2008, 06:03 PM | #1369 |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
It was my experience that in cold weather the car would not properly warm up on E85 with the 160 degree thermostat installed.
I went to a 180 and it works just fine in near zero weather now. I will probably go back to the stock 172 degree thermostat come summer time. I have also found that E85 likes a reasonable amount of intake air heat so this winter I have closed off all the cold air intake access to my air filter and force it to pull hot air from the engine compartment. It appears to have been worth a slight increase in fuel mileage and the engine is happier in cold weather before it fully warms up. Ethanol cannot create a flammable mixture in air temps below 50 degrees F, so the intake air preheat helps fuel evaporation. Larry |
02-06-2008, 12:33 PM | #1370 |
Scooby Newbie
Member#: 58933
Join Date: Apr 2004
Chapter/Region:
E. Canada
Location: Toronto, Canada
Vehicle:2004 STI BLACK |
i would like to see if the pulse spark plugs work well with E85 and if it gives back to the MPG.
any one tryed this? |
02-06-2008, 04:20 PM | #1371 | |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
Quote:
Larry |
|
02-06-2008, 09:49 PM | #1372 | |
Scooby Newbie
Member#: 156772
Join Date: Aug 2007
Location: The ATX - Hemi Terrorizer
Vehicle:1987 2 Turbo Buicks Black |
Quote:
Gary |
|
02-07-2008, 09:08 AM | #1373 | |
Scooby Specialist
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:2002 Impreza WRX |
Quote:
For our uses I am most impressed with the changes in cold soaked cold start on E85 in low Teens and single digit temps. On conventional plugs I would have to let the engine warm up for a minute or two before it would move the car. In very cold temps it would literally not pull the load to move the car on flat ground in low gear until the engine had a bit of heat in it (60-90 seconds of idle). On the Pulstar plugs, I can fire the engine put it in gear and drive off in 8-9 deg F temps after a 12 hour cold soak. It will take me several more weeks to burn up 3-4 tanks of fuel under my normal driving conditions before I can give a solid mpg number but it is clear that there is a small but real increase in fuel mileage. Larry |
|
02-07-2008, 09:17 AM | #1374 |
Scooby Specialist
Member#: 123574
Join Date: Aug 2006
Vehicle:2005 STi CGM |
I may have to pick up a set of those... Did you have to adjust your timing?
|
02-07-2008, 03:24 PM | #1375 |
Scooby Newbie
Member#: 58933
Join Date: Apr 2004
Chapter/Region:
E. Canada
Location: Toronto, Canada
Vehicle:2004 STI BLACK |
so lets say you have a 04 STi GT car and you run a gt 35r-ts at 30 psi and am using my own E-85, would you still recommend them Larry?
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
What do you need to do to use E85 fuel? | wantsti | Rocky Mountains Impreza Club Forum -- RMIC | 37 | 02-20-2014 01:27 AM |
E85 fueling question- 850cc + fpgreen...adjustable FPR? | Blown95ImpalaSS | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 5 | 09-29-2009 07:37 PM |
E85-Fueled Z06, 30th Anniversary Corvettes to Pace ‘08 Indy 500 | AVANTI R5 | Non-Subaru News & Rumors | 0 | 12-27-2007 01:56 PM |
E85 fuel available now in Arvada 9/22/06 | hotrod | Rocky Mountains Impreza Club Forum -- RMIC | 9 | 09-25-2006 02:29 PM |
E85 Fuel in Austin? When? | dromango | Texas Impreza Club Forum -- TXIC | 8 | 06-29-2006 01:32 PM |